From: Andrei Warkentin <awarkentin@vmware.com>
To: Jason Wessel <jason.wessel@windriver.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Andrei Warkentin <andreiw@vmware.com>,
kgdb-bugreport@lists.sourceforge.net,
Matt Mackall <mpm@selenic.com>,
Andrei Warkentin <andrey.warkentin@gmail.com>
Subject: Re: [PATCHv3 1/3] NETPOLL: Extend rx_hook support.
Date: Thu, 1 Mar 2012 15:41:48 -0800 (PST) [thread overview]
Message-ID: <1659130373.1834747.1330645308581.JavaMail.root@zimbra-prod-mbox-2.vmware.com> (raw)
In-Reply-To: <4F4FF712.2030400@windriver.com>
Hi,
----- Original Message -----
> From: "Jason Wessel" <jason.wessel@windriver.com>
> To: "Andrei Warkentin" <awarkentin@vmware.com>
> Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Andrei Warkentin" <andreiw@vmware.com>,
> kgdb-bugreport@lists.sourceforge.net, "Matt Mackall" <mpm@selenic.com>, "Andrei Warkentin"
> <andrey.warkentin@gmail.com>
> Sent: Thursday, March 1, 2012 5:24:18 PM
> Subject: Re: [PATCHv3 1/3] NETPOLL: Extend rx_hook support.
> > I did have a question, because it seems you were using qemu / kvm.
> I have a number of test cases that use kvm, but the netkkgdb does
> not seem to work with the nc. My question is how am I supposed to
> actually use the netkgdb?
>
> Here is what I observe on the target system:
>
> insmod netkgdb.ko netkgdb=@/,@10.0.2.2/
> echo g > /proc/sysrq-trigger
>
> On my host system:
> nc.traditional -l -u -p 7777
>
> I will type help, and then the netkgdb is toast. It doesn't seem to
> respond anymore.
>
Strange. I've just repeated your steps (I didn't build as a ko before, but now I did)
and I don't see this problem. Can you tell me your qemu/kvm command line?
With qemu I've see odd behavior with ne2k_pci, which is the default
(qemu would wedge) occasionally. If you are using ne2000, can you try rtl8139?
Note: I just tried ne2k_pci, and other than having to specify a local
IP address (something I don't need to for rtl8139). I've also realized
that if you insert netkgdb as a module without any parameters, it
doesn't bind to existing netdevs - that's a bug.
Anything I should know about your network topology?
Can you also apply the multi-I/O-backend patch and boot with kgdboc=kbd, and
see if the VM is toast after you type "help".
A
next prev parent reply other threads:[~2012-03-01 23:41 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1330137851-4716-1-git-send-email-andrey.warkentin@gmail.com>
2012-02-27 2:05 ` NetKGDB support v2 Andrei Warkentin
2012-02-27 2:05 ` [PATCHv2 1/2] NETPOLL: Extend rx_hook support Andrei Warkentin
2012-02-27 2:05 ` [PATCHv2 2/2] NETKGDB: Ethernet/UDP/IP KDB transport Andrei Warkentin
2012-02-27 3:30 ` NetKGDB v3 Andrei Warkentin
2012-02-27 3:30 ` [PATCHv3 1/3] NETPOLL: Extend rx_hook support Andrei Warkentin
2012-02-27 23:17 ` Jason Wessel
2012-02-27 23:33 ` Andrei Warkentin
2012-02-28 16:06 ` Jason Wessel
2012-02-28 17:43 ` Andrei Warkentin
2012-03-01 21:04 ` Andrei Warkentin
2012-03-01 22:24 ` Jason Wessel
2012-03-01 23:41 ` Andrei Warkentin [this message]
2012-02-27 3:30 ` [PATCHv3 2/3] NETKGDB: Ethernet/UDP/IP KDB transport Andrei Warkentin
2012-02-27 5:29 ` Valdis.Kletnieks
2012-02-27 5:36 ` Andrei Warkentin
2012-02-27 3:30 ` [PATCHv3 3/3] KGDB: Allow registering multiple I/O ops Andrei Warkentin
2012-02-27 4:38 ` NetKGDB v3 David Miller
2012-02-27 4:43 ` Andrei E. Warkentin
2012-02-28 0:04 ` Stephen Hemminger
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